Composition for non-aqueous secondary battery functional layer, functional layer for non-aqueous secondary battery, and non-aqueous secondary battery
US-2019319236-A1 · Oct 17, 2019 · US
Composition for non-aqueous secondary battery functional layer, functional layer for non-aqueous secondary battery, and non-aqueous secondary battery
US10714722B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10714722-B2 |
| Application number | US-201716307252-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 10, 2017 |
| Priority date | Jun 21, 2016 |
| Publication date | Jul 14, 2020 |
| Grant date | Jul 14, 2020 |
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- Title
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Abstract
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A composition for a non-aqueous secondary battery functional layer contains organic particles having a specific chemical composition and properties, and a binder. The organic particles contained in the composition for a functional layer include an aromatic monovinyl monomer unit in a proportion of at least 20 mass % and not more than 70 mass % and a (meth)acrylic acid alkyl ester monomer unit in a proportion of at least 30 mass % and not more than 70 mass %. The organic particles have a degree of swelling in electrolyte solution of more than a factor of 1.0 and not more than a factor of 4.0, a volume-average particle diameter of at least 0.4 μm and not more than 1.0 μm, and a tetrahydrofuran-insoluble content of at least 20 mass % and not more than 70 mass %.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition for a non-aqueous secondary battery functional layer comprising organic particles and a binder, wherein the organic particles include an aromatic monovinyl monomer unit in a proportion of at least 20 mass % and not more than 70 mass %, a (meth)acrylic acid alkyl ester monomer unit in a proportion of at least 30 mass % and not more than 70 mass %, and a crosslinkable monomer unit in a proportion of at least 0.2 mass % and not more than 0.8 mass %, the organic particles have a degree of swelling in electrolyte solution of more than a factor of 1.0 and not more than a factor of 4.0, the organic particles have a volume average particle diameter of at least 0.4 μm and not more than 1.0 μm, the organic particles have a tetrahydrofuran-insoluble content of at least 20 mass % and not more than 70 mass %, and the binder is an acrylic polymer having a volume average particle diameter of at least 0.1 μm and not more than 0.35 μm. 2. The composition for a non-aqueous secondary battery functional layer according to claim 1 , wherein the organic particles are a random copolymer. 3. The composition for a non-aqueous secondary battery functional layer according to claim 1 , further comprising inorganic particles. 4. A functional layer for a non-aqueous secondary battery formed using the composition for a non-aqueous secondary battery functional layer according to claim 1 . 5. A non-aqueous secondary battery comprising the functional layer for a non-aqueous secondary battery according to claim 4 .
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Classifications
comprising three or more layers · CPC title
Polyolefins · CPC title
- H01M50/446Primary
Composite material consisting of a mixture of organic and inorganic materials · CPC title
Particulate material · CPC title
- H01M10/0525Primary
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US10714722B2 cover?
- A composition for a non-aqueous secondary battery functional layer contains organic particles having a specific chemical composition and properties, and a binder. The organic particles contained in the composition for a functional layer include an aromatic monovinyl monomer unit in a proportion of at least 20 mass % and not more than 70 mass % and a (meth)acrylic acid alkyl ester monomer unit i…
- Who is the assignee on this patent?
- Zeon Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M50/446. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 14 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).